BIOLARGO, INC.

BLGO
About the company

BioLargo, Inc. invents, develops, and commercializes various platform technologies in the United States. The company's technologies solve challenging environmental problems comprising per- and polyfluoroalkyl substances (PFAS) water contamination; advanced water and wastewater treatment; industrial odor and volatile organic compounds control, air quality control, and infection control; and myriad environmental remediation. It provides full-service environmental engineering, battery energy storage, and advanced antimicrobial medical device platforms.

Country: United StatesPrice: $0.07Market Cap: $23.4M

Investment snapshot

0%positive consensus
Scored 1d ago

Positive

0

BUY / PASS

Neutral / negative

2 / 14

NEUTRAL / FAIL

Median fair value

—

No comparable estimates

Models with upside

0 / 17

Positive margin of safety

Key risk

No clean pass — all 16 investors flag at least one profitability criterion

Framework analysis

VerdictMeaning
BUYPositive purchase signal: the framework's buy requirements are met.
PASSThe company clears the framework's checklist or screen, but the framework does not produce a buy signal. For valuation frameworks this often means margin of safety is missing, insufficient, or unavailable; some screen-only frameworks have no intrinsic-value BUY state.
NEUTRALNeither a positive nor negative conclusion. It does not mean to hold an existing position.
FAILThe company does not clear the framework's requirements.
RankedRanked strategies do not use PASS: selected cohort is BUY, outside the cohort is FAIL, and unranked is NEUTRAL.

Current investor scores use trailing 12-month flows and the latest balance sheet where supported. Multi-year and EPS tests retain annual history; each framework shows its financial basis below. Intrinsic values use annual financials.

MetricGraham

Defensive Value

Buffett

Quality Compounder

Lynch

GARP

Greenblatt

Magic Formula

Piotroski

F-Score

Dreman

Contrarian Value

Munger

Quality Focus

Pabrai

Dhandho Framework

Akre

Three-Legged Stool

Marks

Risk-Aware Value

Ackman

Activist Value

Templeton

Global Bargain Hunter

Sleep

Scale Economies Shared

Asness

Systematic Factors

Neff

Low-P/E Total Return

Schloss

Asset-Value Discipline

O'Shaughnessy

Systematic Factor Composite

VerdictFAILFAILFAILNot rankedFAILFAILFAILFAILFAILFAILFAILFAILFAILNEUTRALFAILFAILNEUTRAL
Score
AnalysisChecking access…Checking access…Checking access…Checking access…Checking access…Checking access…Checking access…Checking access…Checking access…Checking access…Checking access…Checking access…Checking access…Checking access…Checking access…Checking access…Checking access…
Intrinsic Value (annual)N/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/A
Margin of SafetyN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/A
Financial Basis

TTM ended 2026-06-30 · Balance sheet at 2026-06-30 · Annual history · FY 2025

Latest source filing: 2026-08-14

Score computed: 2026-11-14

Annual history · FY 2025 · TTM ended 2026-06-30

Latest source filing: 2026-08-14

Score computed: 2026-11-14

Annual history · FY 2025 · Balance sheet at 2026-06-30 · TTM ended 2026-06-30 vs 2025-06-30 · TTM ended 2026-06-30

Latest source filing: 2026-08-14

Score computed: 2026-11-14

Annual history · FY 2025

Latest source filing: 2026-03-04

Score computed: 2026-11-14

Annual history · FY 2025

Latest source filing: 2026-03-04

Score computed: 2026-11-14

Annual history · FY 2025 · TTM ended 2026-06-30 · Balance sheet at 2026-06-30 · Market data at 2026-11-01

Latest source filing: 2026-08-14

Score computed: 2026-11-14

Qualitative assessment · Annual history · FY 2025 · TTM ended 2026-06-30 · Balance sheet at 2026-06-30

Latest source filing: 2026-08-14

Score computed: 2026-11-14

Qualitative assessment · Annual history · FY 2025

Latest source filing: 2026-03-04

Score computed: 2026-11-14

Annual history · FY 2025 · Qualitative assessment · Balance sheet at 2026-06-30

Latest source filing: 2026-08-14

Score computed: 2026-11-14

Annual history · FY 2025 · Qualitative assessment

Latest source filing: 2026-03-04

Score computed: 2026-11-14

Annual history · FY 2025 · TTM ended 2026-06-30 · Balance sheet at 2026-06-30 · Market data at 2026-11-01

Latest source filing: 2026-08-14

Score computed: 2026-11-14

Annual history · FY 2025 · Price history 2025-01-01–2026-11-01 · Balance sheet at 2026-06-30

Latest source filing: 2026-08-14

Score computed: 2026-11-14

Annual history · FY 2025 · Qualitative assessment

Latest source filing: 2026-03-04

Score computed: 2026-11-14

TTM ended 2026-06-30 · Balance sheet at 2026-06-30 · Price history 2025-01-01–2026-11-01 · Annual history · FY 2025

Latest source filing: 2026-08-14

Score computed: 2026-11-14

Annual history · FY 2025

Latest source filing: 2026-03-04

Score computed: 2026-11-14

Annual history · FY 2025 · Balance sheet at 2026-06-30

Latest source filing: 2026-08-14

Score computed: 2026-11-14

TTM ended 2026-06-30 · Annual history · FY 2025 · Price history 2025-01-01–2026-11-01

Latest source filing: 2026-08-14

Score computed: 2026-11-14

Where It Passes

    Where It Falls Short

    • Profitability0% pass✓ 2✗ 33▾

      No clean pass — all 16 investors flag at least one profitability criterion

      Positive EPS (10 years)0/20 years positive
      ✗GrahamPositive EPS every year for 10 years
      EPS Growth (3-yr avg, 10-yr window)
      ✗Graham>= 33% growth
      Net Income Positive (10+ years)0/20 years positive
      ✗BuffettPositive every year for 10+ years
      ROE (up to 5-year arithmetic mean)-149.2%
      ✗Buffett> 15% arithmetic mean (app rule)
      Operating Margin (10-yr trend)-191.3% (latest)
      ✓BuffettStable or rising over 10 years
      Free Cash Flow Proxy$-9.5M
      ✗BuffettPositive and growing
      Earnings Variance (10-yr CoV)
      ✗BuffettCoV < 0.3
      Retained Earnings Effectiveness
      ✗Buffett$1 retained -> > $1 market value created
      Basic earnings-growth PEG (dividends excluded)
      ✗Lynch< 1.0 (ideally < 0.5)
      3-5 Year EPS CAGR
      ✗Lynch15-30% (Fast Grower); > 0% to pass
      ROEN/A (negative equity)
      ✗Lynch> 15%
      EBIT / Enterprise Value-74.6%
      ✗Greenblatt> 10%
      Earnings Yield + ROC AssessmentEY=-74.6%, ROC=N/A (invested capital <= 0)
      ✗GreenblattBoth EY > 10% and ROC > 25%
      Net Income / Total Assets-182.76%
      ✗PiotroskiROA > 0
      ROA Change YoY-41.35% -> -182.76% (delta: -141.41%)
      ✗PiotroskiCurrent ROA > Prior ROA
      (CFO / Total Assets) vs ROACFO/Assets=-99.83%, ROA=-182.76%
      ✓PiotroskiCFO/Assets > ROA
      Gross Margin Change YoY44.2% -> 43.9%
      ✗PiotroskiImproved YoY
      Pre-Tax Income / Revenue-195.6%
      ✗Dreman>= 8%
      Net Income / Shareholders' Equity
      ✗Dreman> 12%
      Margin of SafetyP/B=5.5x
      ✗PabraiP/B < 1.5 or P/E < 15
      Return on Equity-164.3% (3-yr avg)
      ✗AkreROE > 20% (3-year avg)
      Discount to Intrinsic Value
      ✗Marks>= 20% below intrinsic value
      Positive Net Income Frequency0/16 years positive
      ✗MarksPositive net income in >= 7 of last 10 years
      Operating Income / Revenue-443.9%
      ✗Ackman>= 15%
      Net Income / Shareholders Equity
      ✗Ackman>= 15%
      5-Year EPS CAGR
      ✗Templeton> 0% (5-year EPS CAGR)
      Operating Margin Trend-37.4% (2023) -> -191.3% (2025)
      ✗TempletonNon-negative operating-margin trend over 3 years
      Revenue growth vs. gross and operating margin trendgross margin 50.3% -> 43.9%, operating margin -37.4% -> -191.3%
      ✗SleepRevenue rising; gross margin flat or falling; operating margin holding
      Net income / market capitalization-80.21%; #5280/6340 (top 83.3%)
      ✗AsnessTop 30% of eligible cross-section✗OshaughnessyTop 10% of eligible cross-section
      Gross profit / total assets+24.49%; #1763/3702 (top 47.6%)
      ✗AsnessTop 30% of eligible cross-section
      Net income / positive book equity
      ✗AsnessTop 30% of eligible cross-section
      Negative 5-year standard deviation of ROA-0.7208; #5143/5884 (top 87.4%)
      ✗AsnessTop 30% of eligible cross-section
      3-5 Year Diluted EPS CAGR
      ✗Neff7%-20% annualized
      Positive Diluted-EPS Years0/6 years positive
      ✗Schloss>= 70% positive over 5-10 observed years (app rule)
    • Debt & Leverage0% pass✓ 1✗ 14▾

      No clean pass — all 12 investors flag at least one debt & leverage criterion

      LT Debt vs Net Current AssetsLT Debt $2.1M vs NCA $0.1M
      ✗GrahamLT Debt <= Net Current Assets
      Debt/Equity & Interest CoverageD/E: N/A (negative equity), IC: -22.5x
      ✗BuffettD/E < 0.5 AND Interest Coverage > 5x
      Total Debt / EquityN/A (negative equity)
      ✗Lynch< 0.33
      Cash - Long-term Debt$1.8M
      ✓LynchPositive preferred
      LT Debt / Total Assets Change10.26% -> 25.02%
      ✗PiotroskiDecreased YoY
      Current Assets / Current Liabilities0.73
      ✗Dreman> 1.5✗SchlossCurrent ratio >= 1.50x (app cutoff)
      Total Debt / Shareholders' Equity
      ✗Dreman< 0.8✗Templeton< 1.0 (fixed cap; proxy for below-sector-median leverage)✗SchlossD/E < 1.00x
      Debt LevelsN/A (non-positive equity)
      ✗MungerDebt/Equity < 0.5✗AkreDebt/Equity < 0.3
      Interest Coverage & Debt/EBITDAIC=-27.5x, D/EBITDA=N/A (D&A unavailable)
      ✗MarksInterest Coverage > 3x; Debt/EBITDA < 4x
      Total Debt / Shareholders Equity
      ✗Ackman<= 1.0
      Negative debt-to-equity (higher means less debt)
      ✗AsnessTop 30% of eligible cross-section
    • Valuation0% pass✓ 1✗ 27▾

      No clean pass — all 13 investors flag at least one valuation criterion

      Price / 3-yr avg EPS
      ✗Graham<= 15x
      Price-to-Book Ratio5.5x
      ✗Graham<= 1.5x
      P/E x P/B
      ✗Graham<= 22.5
      Basic earnings-growth PEG (dividends excluded)
      ✗Lynch< 1.0 (ideally < 0.5)
      EBIT / Enterprise Value-74.6%
      ✗Greenblatt> 10%
      Earnings Yield + ROC AssessmentEY=-74.6%, ROC=N/A (invested capital <= 0)
      ✗GreenblattBoth EY > 10% and ROC > 25%
      Price / EPS
      ✗Dreman< 12x✗Templeton< 12x (fixed ceiling; proxy for the market's cheapest 40%)
      Price / (CFO / Shares)N/A (negative CFPS)
      ✗Dreman< 8x
      Price / Book Value per Share5.5x
      ✗Dreman< 1.2x✗Templeton< 1.5x✗SchlossP/B <= 0.80x (app cutoff)
      Valuation Reasonableness
      ✗MungerP/E < 25 or Owner Earnings Yield > 5%
      P/E or FCF Yield
      ✗PabraiP/E < 15 or FCF Yield > 10%
      P/B or P/E vs. Historical AverageP/B=5.5x
      ✗MarksP/E < 15 or P/B < 2.0
      Discount to Intrinsic Value
      ✗Marks>= 20% below intrinsic value
      Price / FCF per Share
      ✗Ackman<= 25
      Price vs. Trailing Low117% of trailing low ($0.06)
      ✓Templeton<= 120% of trailing low (certified split-adjusted live window)
      Net income / market capitalization-80.21%; #5280/6340 (top 83.3%)
      ✗AsnessTop 30% of eligible cross-section✗OshaughnessyTop 10% of eligible cross-section
      Positive book equity / market capitalization-0.0791; #5672/6449 (top 88.0%)
      ✗AsnessTop 30% of eligible cross-section
      Price / Diluted EPS
      ✗NeffP/E <= 15x (app proxy for a P/E 40%-60% below the market)
      (EPS CAGR % + Dividend Yield %) / P/E
      ✗Neff> 0.7 (Neff's published traditional edge)
      Price / Tangible Book Value per Share5.54x
      ✗SchlossP/TBV <= 1.00x (app cutoff)
      Book Value per Share Change-21.8%
      ✗SchlossLatest BVPS >= earliest BVPS over >= 3 years (app rule)
      Revenue / market capitalization+0.1743; #3904/5247 (top 74.4%)
      ✗OshaughnessyTop 10% of eligible cross-section
      (Operating cash flow - capex) / market capitalization
      ✗OshaughnessyTop 10% of eligible cross-section
      Trailing six-month price return through the evaluation date-50.04%; #5159/6202 (top 83.2%)
      ✗OshaughnessyTop 10% of eligible cross-section
    • Cash Flow0% pass✓ 1✗ 11▾

      No clean pass — all 10 investors flag at least one cash flow criterion

      Free Cash Flow Proxy$-9.5M
      ✗BuffettPositive and growing
      FCF Positive and Growing$-4.3M
      ✗LynchPositive and growing
      Operating Cash Flow$-8.3M
      ✗PiotroskiCFO > 0
      (CFO / Total Assets) vs ROACFO/Assets=-99.83%, ROA=-182.76%
      ✓PiotroskiCFO/Assets > ROA
      Price / (CFO / Shares)N/A (negative CFPS)
      ✗Dreman< 8x
      P/E or FCF Yield
      ✗PabraiP/E < 15 or FCF Yield > 10%
      FCF Positive0/2 years FCF positive
      ✗MarksPositive FCF in majority of recent years
      (OCF - CapEx) / Market Cap
      ✗Ackman>= 4%
      Price / FCF per Share
      ✗Ackman<= 25
      Positive Operating Cash Flow frequency0/16 years positive
      ✗SleepPositive OCF in >= 70% of available years
      Operating Cash Flow - Capital Expenditures
      ✗Neff> $0 (app proxy for a strong fundamental case)
      (Operating cash flow - capex) / market capitalization
      ✗OshaughnessyTop 10% of eligible cross-section
    • Growth0% pass✓ 2✗ 11▾

      No clean pass — all 8 investors flag at least one growth criterion

      EPS Growth (3-yr avg, 10-yr window)
      ✗Graham>= 33% growth
      Basic earnings-growth PEG (dividends excluded)
      ✗Lynch< 1.0 (ideally < 0.5)
      3-5 Year EPS CAGR
      ✗Lynch15-30% (Fast Grower); > 0% to pass
      Inventory Growth vs Revenue GrowthInv: -31.8% vs Rev: -70.9%
      ✗LynchInventory growth < Revenue growth
      EPS Growth Direction
      ✗DremanPositive over recent years
      EPS CAGR
      ✗Dreman> 5% annualized
      Positive Net Income Frequency0/16 years positive
      ✗MarksPositive net income in >= 7 of last 10 years
      3yr Median Revenue Growth45.4%
      ✓Ackman>= 5%
      Positive EPS Growth Frequency1/1 years with positive EPS growth
      ✗AckmanPositive EPS growth in >= 3 of last 5 years
      5-Year EPS CAGR
      ✗Templeton> 0% (5-year EPS CAGR)
      Revenue growth vs. gross and operating margin trendgross margin 50.3% -> 43.9%, operating margin -37.4% -> -191.3%
      ✗SleepRevenue rising; gross margin flat or falling; operating margin holding
      5-year Revenue CAGR26.1%
      ✓SleepCAGR > 7%
      3-5 Year Diluted EPS CAGR
      ✗Neff7%-20% annualized
    • Efficiency0% pass✗ 11▾

      All 8 investors flag BLGO's efficiency

      Current Ratio0.73
      ✗Graham>= 2.0
      ROIC (3-5 yr avg)-533.9%
      ✗Buffett> 10%
      ROIC - WACC-543.9%
      ✗BuffettPositive (WACC = 10%)
      EBIT / (NWC + Net Fixed Assets)N/A (invested capital <= 0)
      ✗Greenblatt> 25%
      Current Ratio Change YoY2.70 -> 1.01
      ✗PiotroskiIncreased YoY
      Revenue / Total Assets Change YoY1.69x -> 0.93x
      ✗PiotroskiImproved YoY
      Current Assets / Current Liabilities0.73
      ✗Dreman> 1.5
      Return on Invested CapitalN/A (non-positive invested capital)
      ✗Munger> 15%
      ROIC (high and growing)FY2023: ROIC=-50.3%; FY2024: ROIC=-35.0%; FY2025: ROIC=-266.6%
      ✗AkreLatest 3 consecutive FYs: ROIC > 15% in each
      Reinvestment Rate x ROICN/A (non-positive net income)
      ✗AkreReinvestment Rate * ROIC > 10%
      ROIC (5-year)0/5 years above 12% (latest -266.6%)
      ✗SleepROIC > 12% in a majority of years
    • Verdicts0% pass✗ 14▾

      Split decision: 14 FAIL · 2 NEUTRAL

      Overall verdict
      ✗GrahamFAIL (0/9)✗BuffettFAIL (1/9)✗LynchFAIL (1/7)•GreenblattNot ranked✗PiotroskiFAIL (F-Score 1)✗DremanFAIL (0/11)✗MungerFAIL (0/4)✗PabraiFAIL (0/3)✗AkreFAIL (0/6)✗MarksFAIL (0/5)✗AckmanFAIL (2/9)✗TempletonFAIL (2/8)✗SleepFAIL (1/6)•AsnessNEUTRAL (Not ranked)✗NeffFAIL (1/6)✗SchlossFAIL (0/7)•OshaughnessyNEUTRAL (Not ranked)

    Business & financials

    Financial snapshot: annual FY 2025. Current investor scores may use newer quarterly data.

    Company Profile

    Industry: Chemicals
    SIC Sector: Chemicals & Pharmaceuticals
    Size: Micro Cap($23.4M)
    Revenue: $7.8M-56.3% YoY
    Net Income: $15.2M-249.4% YoY

    Financial Snapshot

    Operating Margin-191.3%
    Return on Equity-375.8%
    Debt / Equity0.09
    Current Ratio1.01
    Shares Retired−6.1% / −8.2% 2y

    Shareholder Return

    Fiscal 2025

    Issued 6.1% of shares last year, 8.2% issued over two.

    Buybacks
    —
    Dividends
    —

    Company Financials

    Latest TTM and quarters alongside annual years

    TTM sums four consecutive quarters and uses the latest quarter-end balances. Quarter columns show three-month results; annual columns show full-year totals. Growth compares the same period a year earlier. EPS is not added for TTM; full-year ratios are blank for quarters.

    The latest annual period end is unavailable. Showing the latest fiscal cycle’s quarters; quarter and annual columns may overlap. Quarterly shows the full quarter history.

    MetricTTM · 2026-06-30

    2025-07-01 – 2026-06-30

    Sources · derived quarter values

    Derived from cumulative filings: operating cash flow, revenue, net income, operating income, gross profit, ebit, interest expense.

    Q2 FY 2026

    2026-04-01 – 2026-06-30

    Sources · derived quarter values

    Derived from cumulative filings: operating cash flow.

    Q1 FY 2026

    2026-01-01 – 2026-03-31

    Sources
    FY 2025
    Sources
    • 10-K · 2026-03-04
    FY 2024
    Sources
    • 10-K · 2025-03-31
    FY 2023
    Sources
    • 10-K · 2024-04-01
    FY 2022
    Sources
    • 10-K · 2023-03-31
    FY 2021
    Sources
    • 10-K · 2022-03-31
    Market Cap$23.4Mcurrent----$57.6Mest.$75.3Mest.$62.1Mest.$65.1Mest.$69.1Mest.
    Revenue$4.1M↓71%$1.2M↓55%$1.1M↓66%$7.8M↓56%$17.8M↑45%$12.2M↑108%$5.9M↑132%$2.5M
    Operating Income-$18.1M↓186%-$3.7M↓107%-$3.2M↓72%-$14.9M↓243%-$4.3M↑5%-$4.6M↑15%-$5.4M↑20%-$6.8M
    Net Income-$18.8M↓185%-$4.0M↓113%-$3.4M↓77%-$15.2M↓249%-$4.3M↑6%-$4.6M↑9%-$5.1M↑26%-$6.9M
    EPS (Diluted)--------------$-0.03
    Gross Margin40.0%↓12%54.1%↑6%41.1%↓10%43.9%↓1%44.2%↓12%50.3%↑4%48.6%↑11%43.6%
    Operating Margin-443.9%↓884%-298.7%↓360%-287.4%↓404%-191.3%↓685%-24.4%↑35%-37.4%↑59%-91.6%↑66%-267.8%
    ROE1014.6%↑1447%——-375.8%↓665%-49.1%↑28%-67.9%↑35%-105.2%↑29%-148.2%
    Total Debt$311.0K↓22%$311.0K↓22%$336.0K↓21%$360.0K↓61%$912.0K↑157%$355.0K↑5%$337.0K↓32%$494.0K
    Shareholders' Equity-$1.9M↓121%-$1.9M↓121%$1.8M↓77%$4.0M↓54%$8.9M↑29%$6.8M↑40%$4.9M↑5%$4.7M
    Current Ratio0.73↓67%0.73↓67%1.10↓48%1.01↓63%2.70↑15%2.35↑17%2.00↑53%1.31
    Debt / Equity-0.17↓468%-0.17↓468%0.19↑235%0.09↓14%0.10↑99%0.05↓25%0.07↓35%0.11
    Operating Cash Flow-$10.3M↓38%-$3.1M↓44%-$2.9M↓59%-$8.3M↓159%-$3.2M↓36%-$2.4M↑14%-$2.8M↑30%-$3.9M
    Free Cash Flow----------------

    Score history

    Historical Score Timeline

    Industry peers

    Industry Peers

    Similar companies in Chemicals

    BLGO vs Peers — Financial Grading

    Revenue$7.8MBottom 25%
    Net Income$15.2MBottom 25%
    ROE-375.8%Bottom 25%
    D/E0.09Top 25%
    Op. Margin-191.3%Bottom 25%
    Curr. Ratio1.01Bottom 25%
    CompanyMarket CapPriceRevenueNet IncomeROED/EOp. MarginCurr. RatioGrahamBuffettLynchGreenblattPiotroskiDreman
    EIDP, Inc.CTA-PB$46.8B$54.21——————2/95/92/70/3F-Score 14/11
    INTERNATIONAL FLAVORS & FRAGRANCES INCIFF$20.3B$81.16$10.9B$359.0M-2.5%0.42-3.5%1.423/90/92/70/3F-Score 63/11
    CF Industries Holdings, Inc.CF$18.3B$125.09$7.1B$1.8B37.2%0.6632.5%3.373/94/95/73/3F-Score 88/11
    RPM INTERNATIONAL INC/DE/RPM$13.2B$103.73$7.9B$661.4M20.0%0.77—1.683/92/93/71/3F-Score 67/11
    Element Solutions IncESI$8.0B$33.08$2.6B$190.8M7.1%0.6113.4%3.682/92/91/71/3F-Score 56/11
    NEWMARKET CORPNEU$6.5B$709.19$2.7B$418.7M23.5%0.5020.0%2.534/96/92/71/3F-Score 55/11
    HEXCEL CORP /DE/HXL$6.0B$79.46$1.9B$109.4M8.7%0.799.1%2.262/92/93/70/3F-Score 64/11
    ICL Group Ltd.ICL$5.8B$4.52$7.2B$226.0M3.8%0.468.1%1.335/94/92/70/3F-Score 45/11